ASTMA579-A579M-17 英文版标准文件.pdf

Thi Designation: A579/A579M − 17 Standard Specification for Superstrength Alloy Steel Forgings1 This standard is issued under the fixed designation A579/A579M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval. 1. Scope* E3 Guide for Preparation of Metallographic Specimens 1.1 This specification covers requirements for forged steel E21 Test Methods for Elevated Temperature Tension Tests of Metallic Materials shapes for highly stressed structural members requiring yield strengths in excess of 140 ksi [965 MPa]. E45 Test Methods for Determining the Inclusion Content of Steel 1.2 This specification is not intended for applications lim- E112 Test Methods for Determining Average Grain Size ited by creep deformation. E165/E165M Practice for Liquid Penetrant Examination for 1.3 Twenty-eight grades are covered by this specification. General Industry Selection will depend upon design, service conditions, and mechanical properties required. 3. Ordering Information and General Requirements 1.4 Supplementary requirements are provided for use when 3.1 In addition to the ordering information required